Bird's Nest Drink - Is it really healthy?

Also known as Birds Nest Drink, I recently got some from family, who bought it from Costco. It's by Golden Nest and claims to have 100% genuine swallow bird nest. I tried a pre-chilled bottle and it tasted fine with some soft chunks of what I assumed to be the actual bird's nest. Regarding the drink itself, I felt it was a bit sweet, and there is 14 grams of sugar.

I've heard a lot about Bird's Nest drinks, especially the supposed health benefits. But I've never really done my own research, so here's everything that I've read and learned so far:

What is it?

It's the saliva of the nest of the swiflets.

Male swiftlets build the nest with the saliva, which forms a type of salivary glue (imagine a cement) for their nest.